Nov
07
How do you integrate e^(-x) from 1 to infinity?
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How do you solve the integral e^(-x) from 1 to infinity?
I know the answer is one, but dont understand exactly why it equals one.
Please explain. Thanks =)
How do you solve the integral e^(-x) from 1 to infinity?
I know the answer is one, but dont understand exactly why it equals one.
Please explain. Thanks =)
1 Comments
November 7th, 2009 at 6:10 am
“I know the answer is one”. >>> but I am sorry, it is not..!!
∫e^(-x) dx = [-e^(-x)]
apply limits
= -e^(-∞) + e^(-1)
= 0 + 1/e
=1/e